You can tell when you send them a good-morning text message, or mail them a gift, or take the time to do something for them that you know they’ll barely appreciate — this isn’t going to be reciprocated.

Do not leave me a voicemail. I will not listen to it. I’m going to press the corresponding number to delete your message as soon as the automated voice recording concludes. I’m going to press it with conviction, like a little boy who just won a raffle to implode an old baseball stadium.